ESCGrammarExprs.Logical

Description

Represents a logical expression. The left-hand side (LHS) is evaluated against the right-hand side (RHS) using a predicate with a determination of truth being returned. Both sides must themselves evaluate to a boolean. Examples include AND, OR.

Members

Methods

init

func init(left: ESCGrammarExpr, operator: ESCToken, right: ESCGrammarExpr) -> void

Initialization method. Must be called after instantiation.

Parameters

Name	Type	Description	Required?
left	`ESCGrammarExpr`	Left-hand operand expression.	yes
operator	`ESCToken`	Token representing the operator applied to the operands.	yes
right	`ESCGrammarExpr`	Right-hand operand expression.	yes

Returns

Returns nothing.

get_left

func get_left() -> ESCGrammarExpr

The LHS of the logical expression.

Parameters

None.

Returns

Returns the LHS of the logical expression. (ESCGrammarExpr)

get_right

func get_right() -> ESCGrammarExpr

The RHS of the logical expression.

Parameters

None.

Returns

Returns the RHS of the logical expression. (ESCGrammarExpr)

get_operator

func get_operator() -> ESCToken

The operator (predicate) of the logical expression.

Parameters

None.

Returns

Returns the operator (predicate) of the logical expression. (ESCToken)

accept

func accept(visitor: Variant) -> Variant

Method to invoke visitor-specific code.

Parameters

Name	Type	Description	Required?
visitor	`Variant`	Visitor instance invoked to process this expression.	yes

Returns

Returns nothing.